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30010247 = 52315737
BaseRepresentation
bin111001001111…
…0101110000111
32002110200022122
41302132232013
530140311442
62551120155
7513040301
oct162365607
962420278
1030010247
1115a38163
12a07305b
1362a9857
143db2971
15297bdd2
hex1c9eb87

30010247 has 4 divisors (see below), whose sum is σ = 30021216. Its totient is φ = 29999280.

The previous prime is 30010241. The next prime is 30010297. The reversal of 30010247 is 74201003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30010247 - 216 = 29944711 is a prime.

It is a super-2 number, since 2×300102472 = 1801229850002018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30010241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (7505304).

Almost surely, 230010247 is an apocalyptic number.

30010247 is a deficient number, since it is larger than the sum of its proper divisors (10969).

30010247 is an equidigital number, since it uses as much as digits as its factorization.

30010247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10968.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 30010247 is about 5478.1609140295. The cubic root of 30010247 is about 310.7586241365.

The spelling of 30010247 in words is "thirty million, ten thousand, two hundred forty-seven".

Divisors: 1 5231 5737 30010247